21689716

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{6637}}^1$

素因数の和:6703

約数の個数: 24

約数和(自身を含む): 40890080

約数和(自身を除く): 19200364

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 172, 817, 1634, 3268, 6637, 13274, 26548, 126103, 252206, 285391, 504412, 570782, 1141564, 5422429, 10844858, 21689716]

約数ペア:

[(1, 21689716), (2, 10844858), (4, 5422429), (19, 1141564), (38, 570782), (43, 504412), (76, 285391), (86, 252206), (172, 126103), (817, 26548), (1634, 13274), (3268, 6637)]